Procurato, J.D.L. and Vega, M.F.I.G. 2020. Energy shift maps for direct photon emission by a particle orbiting a Schwarzschild black hole. Proceedings of the Samahang Pisika ng Pilipinas, 38(1), SPP-2020-1F-04. URL: https://proceedings.spp-online.org/article/view/SPP-2020-1F-04.